A father protocol for quantum broadcast channels

Details A father protocol for quantum broadcast channels A father protocol for quantum broadcast channels

2006-12-19

arxiv.org/abs/quant-ph/0612155v3

IEEE Transactions on Information Theory 56(6)2946-2956, 2010

Physics

Quantum Physics

10 pages, improved entanglement consumption rate

Scientific paper

10.1109/TIT.2010.2046217

A new protocol for quantum broadcast channels based on the fully quantum Slepian-Wolf protocol is presented. The protocol yields an achievable rate region for entanglement-assisted transmission of quantum information through a quantum broadcast channel that can be considered the quantum analogue of Marton's region for classical broadcast channels. The protocol can be adapted to yield achievable rate regions for unassisted quantum communication and for entanglement-assisted classical communication; in the case of unassisted transmission, the region we obtain has no independent constraint on the sum rate, only on the individual transmission rates. Regularized versions of all three rate regions are provably optimal.

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